Stock Screening with Amplitude, Main-Fund Control, and Bid-Ask Volume

Summary

This note describes an equity screen combining daily amplitude above one percent, an indicator interpreted as main-fund control on the previous day, and first-level bid volume greater than first-level ask volume. It frames these as technical and order-flow filters that may identify stocks with active buying interest. A Python sketch illustrates range, fund-flow, and best-quote volume conditions, while noting that implementation may vary with the investor's needs and market conditions.

The article does not define the fund-control measure in detail, provide a reliable data specification, or show backtest results. It explicitly cautions that bid volume exceeding ask volume only describes current trading conditions and does not establish future upside. Company profitability, valuation, and broader market conditions are absent from the basic screen. The proposed improvements are to combine technical, fundamental, and capital-flow measures and to examine trading volume and market sentiment; no evidence is given that these changes improve performance.

Key ideas

• The screen combines amplitude above one percent, previous-day main-fund control, and best bid volume exceeding best ask volume.
• The bid-ask volume comparison describes current order-book conditions rather than guaranteeing price appreciation.
• The sample code is illustrative and does not provide a detailed definition of the fund-control indicator.
• The note advises including company fundamentals and broader market context, but supplies no performance evaluation.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.